Takes courage to come to a decision like that GM, and I wish you the best of luck in the future. Currently going through some of the things on your list myself so I can definitely sympathize with where you are coming from.
Thank you also for taking the time to let us know - it means a lot. Even though this is coming to an end, it was still an enjoyable game while it lasted, so thank you for that.
All the best GM with everything that you do~